• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Zoological Science >Predominance of cross-predation between lateral morphs in a largemouth bass and a freshwater goby.
【24h】

Predominance of cross-predation between lateral morphs in a largemouth bass and a freshwater goby.

机译：大口黑鲈和淡水虾虎鱼的侧向形态之间的交叉捕食占优势。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The predator-prey relationship between largemouth bass, Micropterus salmoides, and freshwater goby, Rhinogobius spp., in Lake Biwa, Japan, was examined with respect to their morphological antisymmetry (laterality). Largemouth bass and Rhinogobius gobies exhibited lateral dimorphism in the height of the mandible and the length of the dentary, respectively. Populations of both species were composed of both left-developed and right-developed individuals. Each predation event was categorized as either cross-predation (a predator caught prey of the opposite morph) or parallel-predation (a predator caught prey of the same morph). Stomach contents analysis revealed that cross-predation events predominated over parallel-predation. Annual sampling for eight years demonstrated that in both largemouth bass and Rhinogobius gobies, the ratio of right-developed individuals in the population fluctuated temporally around 0.5. As the predominance of cross-predation was found in the relationship between the exotic largemouth bass and an endemic goby, the predominance may be caused by a kinematical interplay at each predation event.
机译：就其形态反对称性（偏侧性）而言，研究了日本琵琶湖大嘴鲈，沙门氏菌（Micropterus salmoides）和淡水虾虎鱼（Rhinogobius spp。）之间的天敌关系。大嘴鲈和Rhinogobius虾虎鱼分别在下颌骨的高度和牙齿的长度上表现出横向二态性。这两个物种的种群均由左发育个体和右发育个体组成。每个捕食事件都被分类为交叉捕食（捕食者捕捉到了相反形态的猎物）或平行捕食（捕食者捕捉到了相同形态的猎物）。胃内容物分析显示，交叉捕食事件比并行捕食事件占主导地位。八年的年度采样表明，在大口黑鲈和犀牛虎虾中，正确发育的个体在人口中的比例随时间波动在0.5左右。由于在异国大嘴鲈与地方性虾虎鱼之间的关系中发现了交叉捕食的优势，所以这种优势可能是由于每个捕食事件的运动学相互作用造成的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号